Portion of a zipper pull



FIG. 1 is a top plan view of a portion of a zipper pull showing my new design, the bottom plan view being the same;

FIG. 2 is a front elevational view, the opposite side view being the same;

FIG. 3 is a right side elevational view, the left side being the same; and,

FIG. 4 is a partial perspective view.

The broken line showing of a zipper pull in FIGS. 1-4, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a zipper pull, as shown and described. 